Fuel pump lost power to it

1998 DODGE RAM
160,000 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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TODD MCCORCLE
  • MEMBER
  • 2 POSTS
Out of no where fuel pump stop working no power to it. I cannot find any bad wires. Which is the power wire on the plug coming from truck harness there are four wires?
Feb 16, 2017 at 12:25 PM
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CJ MEDEVAC
  • ✓Experienced Mechanic
  • 11,000 POSTS
When you turn the key on,

You will only get one second of power to the pump (normally you will hear the pump run for that second).

As far as testing for power, two people may be needed to 'turn the key and test' at the same time. (maybe you thought it was powered constantly?)

Short of the pump maybe being bad.

Have you checked your fuses or relays?

I cannot look up your vehicle or a wire diagram with the information you provided (something is not correct). Your VIN or a super full description would maybe get me hooked up.

The Medic
Feb 16, 2017 at 12:48 PM
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TODD MCCORCLE
  • MEMBER
  • 2 POSTS
I am sorry 318.
Feb 16, 2017 at 12:59 PM
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CJ MEDEVAC
  • ✓Experienced Mechanic
  • 11,000 POSTS
Much better!

I 'red arrow-ed' the power wire for the fuel pump (picture 1).

I also did the same for other stuff to check. (locations are listed beside the boxes)

See pictures below.

(bedtime for me!)

Keep us posted on progress.

The Medic
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Feb 16, 2017 at 1:25 PM
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